1//===-- MipsFrameLowering.h - Define frame lowering for Mips ----*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// 10// 11//===----------------------------------------------------------------------===// 12 13#ifndef LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H 14#define LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H 15 16#include "Mips.h" 17#include "llvm/CodeGen/TargetFrameLowering.h" 18 19namespace llvm { 20 class MipsSubtarget; 21 22class MipsFrameLowering : public TargetFrameLowering { 23protected: 24 const MipsSubtarget &STI; 25 26public: 27 explicit MipsFrameLowering(const MipsSubtarget &sti, Align Alignment) 28 : TargetFrameLowering(StackGrowsDown, Alignment, 0, Alignment), STI(sti) { 29 } 30 31 static const MipsFrameLowering *create(const MipsSubtarget &ST); 32 33 bool hasFP(const MachineFunction &MF) const override; 34 35 bool hasBP(const MachineFunction &MF) const; 36 37 bool isFPCloseToIncomingSP() const override { return false; } 38 39 bool enableShrinkWrapping(const MachineFunction &MF) const override { 40 return true; 41 } 42 43 MachineBasicBlock::iterator 44 eliminateCallFramePseudoInstr(MachineFunction &MF, 45 MachineBasicBlock &MBB, 46 MachineBasicBlock::iterator I) const override; 47 48protected: 49 uint64_t estimateStackSize(const MachineFunction &MF) const; 50}; 51 52/// Create MipsFrameLowering objects. 53const MipsFrameLowering *createMips16FrameLowering(const MipsSubtarget &ST); 54const MipsFrameLowering *createMipsSEFrameLowering(const MipsSubtarget &ST); 55 56} // End llvm namespace 57 58#endif 59